Overview
Maria Anna Katharina Rutowska (1706–1746) was a Polish noblewoman.
She was the illegitimate daughter of Polish king Augustus II the Strong and his mistress, the Turk Fatima or Fatime, later renamed Maria Anna von Spiegel.
Life
Katharina was the second child of the liaison between Augustus II and Fatima; her older brother, Frederick Augustus, was born four years before.
Shortly after the birth of Frederick Augustus, the King married Maria Anna with his chamberman Johann Georg (von) Spiegel, but she remained as his mistress. Katharina was born during this marriage and legally used the name Maria Anna Katharina von Spiegel during her first years of life.
From Wikipedia (CC BY-SA 4.0).